Milford Sound Underwater Observatory

New Zealand's only floating underwater observatory

Hidden under the surface in Harrison Cove is a unique and beautiful environment – there’s nowhere else in the world quite like it. In the middle of Piopiotahi Marine Reserve, the Underwater Observatory enables you to experience the magic of this special world, previously the exclusive realm of divers.

Descend 64 steps (10 metres) underwater into a large, fully air conditioned viewing area where large windows with excellent optical clarity open your eyes to this deep underwater haven. Unlike an aquarium, the fish are free to come and go; it’s the people who are contained.

Why visit the Milford Sound Underwater Observatory?

New Zealand’s only floating underwater observatory is a unique learning experience

Be guided through the Milford Sound story on colourful information panels covering culture, heritage, history, geology and wildlife

Watch dramatic Milford Road and Homer Tunnel avalanche videos

Immerse yourself in a mysterious undersea world and encounter the extraordinary rare black coral and colourful sea creatures teeming just below the surface

Thanks to its unique underwater environment, Milford Sound is home to species of black coral usually found at depths of more than 500 metres